Myth: Eating fat will make you fat

No one food or nutrient is responsible for weight gain, and if you cut fat from your diet you miss out on its many benefits.

"Good fats keep you full for longer and they curb cravings," Hall explains.

"Good fat" is usually shorthand for unsaturated fat, the kind found in foods including salmon, avocados, eggs, nuts and olive oil. (Saturated fat, often labelled "bad" fat, is mostly found in animal products like meat and dairy.)

Hall adds that just because a food is low in fat doesn't mean it's healthy. "Be careful of fat-free products — always check the sugar content, because often if they're fat-free they're sugar-stuffed to make them taste better," she says.

Myth: Stomach crunches burn stomach fat

It's basically impossible to "spot reduce" fat — that is, to lose fat from only one part of your body. So, on their own, stomach crunches won't give you a flat stomach.

If that's your goal, Hall advises "you have to focus on reducing your all-over body fat" rather than trying to burn it off a particular area.

And she adds that she hates crunches anyway, which don't strengthen your whole core — which includes your obliques, your lower back, your glutes and your pelvic floor, in addition to the famed six-pack.